The new valves delivered with every UST Tubeless compatible wheel can be put apart in two parts. This enables to inject tube sealant easily. A mini-tool is delivered with the valve. This valve is compatible both for Schraeder and Presta holes sizes (8,5mm and 6,5mm) to inflate tires easily and is essential to ensure an airtight rim for a tubeless use. Remove it when using a tube in the tire.